Vulnerability in Kernel: arm64 entry.S ventry overflow sanity checks
Summary
GSD-2022-1000825: arm64: entry.S: Add ventry overflow sanity checks. Affects Kernel versions < dc5b630c0d532140e194997d350f587dbcc78bfb. No fix is published. How to fix ↓
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Background
The Kernel is a critical component of the Linux operating system that provides core functionalities and interfaces with hardware devices. It acts as an intermediary between software applications and the computer's hardware. The arm64 architecture is a widely used processor architecture for mobile devices, servers, and embedded systems. The entry.S file in the Kernel contains assembly code that handles the initial entry point for system calls and interrupts. This vulnerability specifically affects the arm64 entry.S file and involves the lack of ventry overflow sanity checks.
Vulnerability Detail
The arm64 entry.S file in the Kernel lacks ventry overflow sanity checks, which could lead to potential security vulnerabilities. Although the impact and attack plausibility have not been proven, the absence of these sanity checks could potentially allow an attacker to exploit buffer overflows or other memory corruption issues. This could result in unauthorized access, privilege escalation, or the execution of arbitrary code. The vulnerability has been addressed in Linux Kernel version v5.10.105 by commit dc5b630c0d532140e194997d350f587dbcc78bfb.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
There is no specific workaround mentioned for this vulnerability.
Conclusion
In conclusion, the arm64 entry.S file in the Kernel lacks ventry overflow sanity checks, which could potentially lead to security vulnerabilities. It is recommended to update the Linux Kernel to version v5.10.105 or later to mitigate this vulnerability. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
The impact of this vulnerability could potentially allow an attacker to exploit buffer overflows or other memory corruption issues, leading to unauthorized access, privilege escalation, or the execution of arbitrary code.
Yes, this vulnerability has been fixed in Linux Kernel version v5.10.105 by commit dc5b630c0d532140e194997d350f587dbcc78bfb.
To update the Linux Kernel, you can obtain the updated source code from the official Git repository (https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/) and compile it for your system. Alternatively, you can wait for your Linux distribution to provide an updated package containing the fixed Kernel version.
At the time of this report, there are no known exploits for this vulnerability. However, it is important to apply the fix as soon as possible to mitigate any potential risks.
You can find more information about this vulnerability in the official Linux Kernel source code repository (https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/) and the associated commit dc5b630c0d532140e194997d350f587dbcc78bfb.
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